Ash-sjfter



3 Sheets-Sheet 2. B. H.GO0K.

ASH SIFTER.

Patented Feb. 17, 1885.

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ASH SIFTER. No. 312,434. Patented Feb. 17, 1885.

N. PETERS. Plmmmhogmpher, wasningmn. D. c,

UNirnn STATES PATENT Ottica.,

BURTON H. COOK, OF BROOKLYN, NEV YORK.

ASH-SIFTER.

SPECIFICATION forming part of I Qetters Patent No. 312,434, dated February 17, 1885.

Application filed October 1, 1884. (Xo model.) Patented in Canada August l, 1SS4, No. 19,877.

fo all w-/ton/ it may concern: Y

Be it known that I, BURTON H. COOK, of the city of Brooklyn, county of Kings, and State of New York, haveinvented certain new and useful Improvements in Ash-Siders; and I do hereby declare that the following specication is a full7 clear, and exact description of the same.

My invention belongs to that class of ashsifters, such as shown in my former PatentNO. 301,684, having a rotary cylindrical sieve one section of which is removable to permit the insertion and removal of the cinders, and which cylinder is mounted in an-inclosing box provided with a movable slide or partition adaptedto be used as a cover for the box, and also tobe slid across the box beneath the cylinder when the siftingy is finished to form an inclined chute, on which the cinders may be dumped, and by which they are discharged from the side ot' the box.

My present inventionconsists, mainly, in several detailed improvements on the main features of my former invention, and relates to the chute-slide and the dumping-door and their cooperating parts; also, to the valvecover of the chuteway and to the guides of the chuteway.

Another feature lies in the special means for fastening the wire-cloth to the cylinderhead and to a catch to prevent the cylinder turning, when so desired; and a further feature lies in an improved construction and arrangement of cylinder-lid, which slides cir-` cumferentially in curved guides on theperiphery ofthe cylinder, the removable hinged lid heretofore employed being dispensed with, which several features are hereinafter fully set forth and claimed.

In the drawings annexed, Figure l presents a vertical transverse section of my improved sifter with the parts shown in the position for sifting, while the dotted lines show the position of parts when the cinders are ready for dumping. Fig. 2 is a longitudinal section7 looking toward the discharge side of the box. Fig. 3 is a plan view of Fig. l on a smaller scale. Fig. 4 is an elevation ot' the discharge side of the sifter, and Fig. 5 an elevation of the opposite side. Fig., 6..,is an enlarged plan view of the top of the cylinder and its sliding lid, with the chute-slide in place below the cylinder.

Referring to Figs. l, 2, and 3, c indicates the base of the siffer, which is of the usual round and flanged form adapted to t on and over the head of the aslrbarrel, and b indicates the casing of the sifter, which is preferably a square upright box risingcentrally from the base a. In the upper part of the box is in- 6c closed the cylindrical sieve A, which consists. of a cylinder, c, of wirecloth, fixed to two round wooden heads, d d, which heads are fitted with little metal trunnions c e, which are journaled in holes bored in each side of the box, thus form-ing an axis on which the cylinder is free to revolve within the box in the usual manner of rotary sifters, as will be readily understood from Figs. 2 and 3. One ofthe is squared to receive a crank, f, whereby the cylinder may be rapidly revolved to sift the Vcinders in t-he usual manner. This crank is held on by a barbed springwire catch, f', as 4shown in Fig. 2. One section, q, 4of the wire- 75 cloth c ot' the cylinder is movable to permit the insertion and removal of the material to be sifted, and this lid-section q is riveted to a light cast-iron frame, h, so as to form a sliding lid to the cylinder, as best shown in Figs. l, 8O

2, and 6. The lidframe his formed with projecting lugs h' hf, which fit into the curved slots in the curved guides i, secured around the peripheries of the cylinder-heads, so that the lid h is thus free to slide circumferentially back or forth, and thus uncover or cover the lid-aperture in the cylinder through which the cinders are inserted or removed, as will be readily understood by reference to Figs. l, 2, and 6. This circumferentially-slidiug lid, 9o as will be noted, is a great advantage over the removable hinged lid heretofore employed, as it is not only very simple in construction, but very convenient and simple to operate, and is always attached on the cylinder, and is therefore not capable of being misplaced, and is opened and closed with greater ease and rapidity.

The curved guides i are preferably made of head, and formed with lateral ears j at the l middle, which lap over the inside of the cyl trunnions is a little longer than the other, and 7ocast-iron, screwed at each end to the cylinder! iOO inder-head, and are there fastened by ascrew, l when the ashes have been sifted out the lid is as well shown in Figs. 1 and 2, thereby preventing circumferential or lateral displacement of the guides. The slot of the guides,

5 as shown best in Fig. 2, is well iared and rounded,not only for ease of casting, but to prevent the possibility of the lid becoming jammed therein by fragments of einders.

The wire-cloth c of the cylinder is fastened 1o to the heads in a very simple. secure manner,

(best shown in Figs. 1 and 2)-that is, by means of three sheet-metal brackets, w, on each head,

which are screwed to the heads and fastened by bolts lw to the wire-cloth, as fully shown I5 in Figs. 1 and .Z-thus fastening the wire-cloth most securely to the heads, and at the same time in a very light, simple, and inexpensive manner, as will be readily appreciated.

The ragged edges of the wire-cloth c at each 2o side of the opening for the lid q are covered and bound by the sheet-metal plates m and 7c,

(see Fig. 6,) which extend the entire length of the cylinder, as shown in Fig. 6. These plates k m are perforated with three holes, m', as

shown best in Fig. 6, vto admit bolts, whereby they are secured to the wire-cloth, as shown in Figs. 2 and 6. These plates k m not only greatly strengthen the wire-cloth at the edges of VA[he lid-opening, but also form a smooth Laci-cover or binding to the ragged edges of the cloth, and thus impart a finished appearance to the sieve and render the saine much more durable.

n To the middle of the plate m is affixed a spring catch or latch, a, the barb or hooked head of which projects up in the path of the sliding lid IL, so that when the lid is slid forward to the end of the guides to cover the opening in the cylinder the catch n will spring 4o up behind the back edge of the lid, and thus hold it from becoming inadvertently opened during the action ofthe sifter, as will be readily coinprehended. lVhen, however, it is desired to open the lid, it is of course slid forcibly back-ward by the hand, when the spring n will yield and spring under the edge of the lid, which will thence be slid over it until the lid is slid fully back, at which point the catch will spring up in front of the front edge of the 5o lid, and thus hold it open, but will again yield in a similar manner when it is desired to close the lid, as will be readily com prehended from Figs. 1 and G, thus forming a simple and effective catch.

After the ashes and einders have been placed in the cylinder, and the sliding lid closed over the same as described, the sifting operation is performed in the usual way, by rapidly revolving the cylinder by rotating the crank, 3o which will cause the ashes to fly out through the meshes and fall into the barrel below,

while the einders of useful size remain in the cylinder'.

When the cylinder is being revolved to sift the einders as above described, the box bis of course covered by the lid g, as shown in Fig. 1, to prevent the escape of ashes, and

removed and inserted across the box below the cylinder and out through a dischargedoor, r, on the .side 0f the box, forming a chute, as shown by Vdotted lines in Fig. 2, whereby the einders may be dumped out of the cylinder into the scuttle. placed beneath the end of the chute, as will be readily understood from the dotted lines in Fig. 1. It will therefore be seen that the lid g serves both as the cover for the sieve-box and the chuteslide in which the einders are dumped and discharged, and by referring to Figs. 1 and 3, it will be seen that the lid gr is made considerably longer than necessary to cover the top of the box, but of just the right width to fit between the end walls of the box, which, as seen in Figs. 2 and 3, project up above the side walls a distance equal to the thickness of the cover, so that these walls embrace each side of the cover,whi1e the cover rests on the tops of the side walls, as shown, and also on the top of two concaved cleats, b, which are fastened to the end walls, as shown in Figs. l and 2. The cleats b not only serve to partly support the cover, but also prevent einders falling down between the ends of the cylinder and the ends of the box.

One end of the cover is formed with a handle, g2, and also with a stop rim or shoulder, g', which abuts against one side of the box when the cover is placed either over the same or across the box below the cylinder, as shown by full and dotted lines in Fig. 1.

On one side of the box below the cylinder is formed a slit, o, extending the full width of the box, and within the box on each side thereof inclined ways o oi are formed coincident with said slot and inclining downwardly therefrom. At the foot of the inclined ways at the opposite side of the box an opening is formed to provide a discharge-orifice for the sifted einders, which opening runs the full width of the box similar to the slot o, and is provided with an outwardly-opening hinged door, r

7 (see Figs. 1, 2, and 4,) having a downwardlyinclined inwardly-projecting ringer or bracket, s, thereon, as shown in Fig. 1, which door normally gravitates shut, aided forcibly by a spring, r', as shown in Fig. l, so as to prevent the escape of dust or ashes during thc sifting operation. The bracket s is preferably made of wire bent into form and secured to the door r, as shown in Fig. l. The slot o is also provided with a vertically-sliding cover or valve, t, which normally gravita-tes against the tops of the under ways, 02, which project slightly from the box, and thus form stops to limit the closing motion ofthe valve t, which therefore always tends to keep the sloto closed to prevent the escape of ashes, as will be readily understood from Figs. l and The valve t is held in place by two screws, t, which pass through two short vertical slots, t2, in the valve, which thus allow its vertical movement, as shown best in Fig. 5, washers being placed under the heads ofthe screws to obtain a more IOO IIO

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extended bearing on the valve.

wire, u, projecting from the valve and guided in staples, forms a simple haudle,whereby the valve may be raised to admit the cover q when required. IThe lower edge of the slide t is beveled to correspond to theinclination ofthe ways o o2, as shown in Fig. l, and it will therefore be seen that when the slide g is inserted in the ways, as indicated by dotted lines, the beveled edge ofthe valve t will lit accurately on the ways, and thus prevent the escape of dust, and at the same time the slide g may bc freely moved in or out under the beveled edge of the valve without the'tendency to become jammed or wedged against the valve, as would be likely to occur if the valve t were hinged in an inclined position relativelyto the slideg.

It will now be readily understood that when the sift-ing operation is finished the lid or cover r/ of the box is removed and inverted and then slid into the slot o on the side ofthe box and down the inclined ways o' until the rim g' strikes the side of the box, which will @use the opposite end of the cover to protrude through the discharge-orifice and thereby open the door r, as shown by dotted lines in Fig. l. By referring now to Fig. 3 it will be seen that the lower end of the cover g is notched or narrowed for a short distance, so

as to form salient corners or angles 5 5, which are protected by angle-irons, -as indicated and by referring to the dotted lines in Fig. l it will be seen that when the cover g is slid down the ways o', as before described, one of the angles 5 will strike the bracket s on the door r, .and thus swing around the bracket and open the door, as shown by dotted lines in Fig. l, until finally the tip of the bracket will be held between the shoulder on the cover an d the side of the box b.when the cover g will be fully inserted, and the door r fully opened, as shown bythe dotted lines in Fig. 1, and the door will be thus rmly held open by the engagement of the angle 5 of the cover against thebracket s. W'hem therefore, the cinders are now dumped from the cylinder, they will fall on this slide or cover, which thus forms a chute to discharge them through the door over the edge of the base-rim c into the seattle or other vessel placed beneath the same to ree ceive them, as will be readily understood from Fig. l. Hence by this means one part serves both as the lid and the chute, as set forth iu my former patent, thus rendering the con struction cheap and simple, and quite convenient in operation, as the mere removal and insertion of the lid prepares the apparatus for dumping and automatically opens the door r.' After the cinders are dumped the slide is removed and placed on the top of the box as before, and the doors r t will of course close of their own gravity, thus preparing the box for the next operation of sifting.

Referring to Fig. -2 it willbe noted that the upper guides, o', of the slideway are wider than the lower ones, and overhang the same,

and therefore .act to prevent small cinders en- A hooked l tering the slideway, and thus obviate any jamming or obstruction of the slide in its movement .in or out of the guides, as will be readily appreciated. If, after the cinders are sifted, it is desired to look over the same to remove eli nkers before thecinders are dumped, the cylinder can he held stationary with the lid open at the top by means of a spring-catch which is fixed on the side of the boX, and capable of being engaged with and disengaged from the crankf, as shown best in Figs. 2, 5, and 4. This stop-catch consists of a baseplate, o, affixed to the side of the box below the trunnions of the'eylinder, and to this plate is pivoted a forked arm, y, having a notched cani at its end, which engages the tip of a spring, n', secured to the base-plate 'v in a manner similar to that in which the blades of pocketknives engage the back-springs in the handles. The forked arm y] is therefore capable of being folded down flatly against the base-plate o parallel with the side of the box, or of being swung up and 'out at right angles thereto, as shown in Figs. 2, 5, and 4, in either of which positions it will be held by the spring o', as will be readily understood from the drawings. Vhen, therefore, the cylinder is turned to bring the lid-opening to the top, as in Fig. 2, t-he crankf will hang straight down in line with the forked arm y, and by seizing the forked arm y with the foreiinger and spring- -iug it up its forked end will straddle and engage the crank, as shown in Figs. 2, 5, and 6, and thus firmly hold the cylinder in .the desired position, as will be readily comprehended. Vhen it is desired, however, to again turn the cylinder,it is onlynecessary to touch the fork 1/ with the nger and spring it down into its folded position, as shown in Fig. 4, when it will disengage the crank and leave the crank and cylinder free to revolve as before.

It may now be appreciated that the several features described greatly improve my former invention and add materially to its durability and simplicity and its ease and certainty of operation, and thus form an improved type of rotary sil'ter.

I do not wish to be understood as broadly claiming a circumferentially-sliding lid on a rotary sifter, but only the novel and specific features thereof herein shown.

Vhatl claim as my invention is l. In a rotary sieve provided with a peripheral opening, the arc-shaped guide-castings z, attached to and extending from the heads of the sieve and slotted in conformity to the circumference of the sieve, said slots in cross-section being inversely flared, in combination with a lid covering said opening and fitted to slide circuinferentially within the slotted guides i, substantially as and for the purposes specified.

2. In combination with the sieve and its sliding lid, the curved slotted guides i z', formed with the lateral fastening-ears j j ,substantially as herein set forth.

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3. In a rotary sieve having a circumferential opening, frame h, encompassing said opening and carrying a meshed fabric, the two opposite sides of said frame conforming -to the periphery of the sieve, and lugs h', at-

opening,and a lid sliding peripherally on saidn sieve to open and close said opening. in combination Witha spring attached to the sieve Within the path of the' sliding lid, and constructed to hold the lid in an open or closed position, substantially as set forth.

5. The combination, with the sieve-box, the rotary sieve and its crank, of the plate o, and its pivoted catch y, and spring v', arranged and operating substantially as and for the purpose set forth.

6. A sieve and sieve-box, the latter provided With a cinder-outlet, a gravitating door having arms s, said arms being attached, respectively, to the opposite ends of the said door, substantially as described, With their free ends projecting within the path of the chute, in combination With the chute having portions of its sides cut away to form abutments to press against said arms, substantially as and for the purpose specified.

7. The combination, with the sieve and sieve-box having the slot o, and a dischargedoor on the side opposite said slot, of the movable chute-slide adapted to enter said slot and open said door, and the sliding valve t, adapted to tit over said slot against said slide, substantially as herein shown and described.

8. The combination, with the sieye A, the slide g.VV and the sieve-box b, having the Ways 0,projecting out beneath slot o,\vith the slide t, covering said slot and resting on the ends ofsaid Ways, substantially as shown and described. Y

9. The combination, with the sieve-box and the rotary cylindrical sieve, of the guides Z/, affixed to the ends of the box, each coneaved on its lower edge to fit over the ends of the cylinder, with the upper edge straight and arranged to support the cover of the box, substantially as shown and described.

BURTON H. COOK.

XVitnesses:

Crais. M. HIGGINS, Jol-IN BECKER. 

